NO971611L - Stöydeteksjons- og undertrykkelsessystem for brönnhulls-telemetri - Google Patents

Stöydeteksjons- og undertrykkelsessystem for brönnhulls-telemetri

Info

Publication number
NO971611L
NO971611L NO971611A NO971611A NO971611L NO 971611 L NO971611 L NO 971611L NO 971611 A NO971611 A NO 971611A NO 971611 A NO971611 A NO 971611A NO 971611 L NO971611 L NO 971611L
Authority
NO
Norway
Prior art keywords
spectrum
noise
signal
identifying
noise detection
Prior art date
Application number
NO971611A
Other languages
English (en)
Other versions
NO318127B1 (no
NO971611D0 (no
Inventor
Benjamin Peter Jeffryes
Original Assignee
Anadrill Int Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anadrill Int Sa filed Critical Anadrill Int Sa
Publication of NO971611D0 publication Critical patent/NO971611D0/no
Publication of NO971611L publication Critical patent/NO971611L/no
Publication of NO318127B1 publication Critical patent/NO318127B1/no

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
    • G01V1/364—Seismic filtering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/20—Trace signal pre-filtering to select, remove or transform specific events or signal components, i.e. trace-in/trace-out
    • G01V2210/21—Frequency-domain filtering, e.g. band pass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/30—Noise handling
    • G01V2210/32—Noise reduction
    • G01V2210/324—Filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Mining & Mineral Resources (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Oppfinnelsen angår fremgangsmåter og apparater for å identifisere og fjerne støy fra borehulls-telemetrisignaler. Et spektrum av signalet og av et tilnærmet støvfritt spektrum av signaler blir generert og sammenlignet for å identifisere frekvenser ved hvilke støy oppstår. Det tilnærmede spektrum biir fortrinnsvis generert ved en gjennomsnitts-takningsprcsess eller integre-ringsprosess som i det vesentlige resulterer i en utglattet variant av signalspektret. Sammenligningen omfatter dividering av signalspektret med det tilnærmede spektrum, og fastsettelse av en terskel i det resulterende dimensjonsløse toppspektrum. Den resulterende del av toppspektret blir identifisert som støy. Det dimensjonsløse spektrum er funnet å ha viktige fordeler når man må identifisere støyfrekvenser.
NO19971611A 1996-04-09 1997-04-08 Stoydeteksjons- og undertrykkelsessystem for bronnhulls-telemetri NO318127B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9607297.0A GB9607297D0 (en) 1996-04-09 1996-04-09 Noise detection and suppression system for wellbore telemetry
US08/831,548 US6023658A (en) 1996-04-09 1997-04-09 Noise detection and suppression system and method for wellbore telemetry

Publications (3)

Publication Number Publication Date
NO971611D0 NO971611D0 (no) 1997-04-08
NO971611L true NO971611L (no) 1997-10-10
NO318127B1 NO318127B1 (no) 2005-02-07

Family

ID=26309077

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19971611A NO318127B1 (no) 1996-04-09 1997-04-08 Stoydeteksjons- og undertrykkelsessystem for bronnhulls-telemetri

Country Status (4)

Country Link
US (1) US6023658A (no)
CA (1) CA2201552C (no)
GB (1) GB9607297D0 (no)
NO (1) NO318127B1 (no)

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US8942330B2 (en) 2012-01-18 2015-01-27 Baker Hughes Incorporated Interference reduction method for downhole telemetry systems
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US9982532B2 (en) 2012-05-09 2018-05-29 Hunt Energy Enterprises, L.L.C. System and method for controlling linear movement using a tapered MR valve
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US9890633B2 (en) * 2014-10-20 2018-02-13 Hunt Energy Enterprises, Llc System and method for dual telemetry acoustic noise reduction
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CN114088195B (zh) * 2021-11-17 2024-04-02 西安石油大学 一种钻井井场噪声的分析方法、采集装置、电子设备及介质

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Also Published As

Publication number Publication date
NO318127B1 (no) 2005-02-07
US6023658A (en) 2000-02-08
CA2201552A1 (en) 1997-10-09
NO971611D0 (no) 1997-04-08
CA2201552C (en) 2005-01-04
GB9607297D0 (en) 1996-06-12

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